DML Final Exam Set

weld - Answer - made when separate pieces of material to be joined combine and form one piece when heated to a temperature high enough to cause softening or melting benefits of welding - Answer - dependable, efficient, economic method for permanently combining materials how many axes of motion do the manual lathes have - Answer - 2 (x and z) what typically gets clamped into the lathe's chuck - Answer - the part you are working with what typically gets clamped into the tailstock - Answer - the drill bit list four lathe operations used to produce the assigned wheel hubs in class - Answer - facing, chamferring, turning, drilling list four lathe operations used to produce the assigned motor mounts in class - Answer - how much is the diameter of a workpiece reduced if the cutting tool is moved .1" towards the spindle's centerline and why (lathe) - Answer - .2", the .1" will be taken off radially three controllable cutting parameters for lathes - Answer - feed rate, cutting speed, depth of cut what type of manual milling machines do we have in the lab - Answer - knee and column mills (3 axes of motion) from what type of material are the milling cutters and drills used in the lab made - Answer - high speed steel (HSS) what is the limiting factor (not the .100" limit) for how deep you can cut per pass with an endmill in a particular material - Answer - machine stiffness, cutting tool stiffness, and/or workpiece stiffness what type of internal thread is better for softer materials? - Answer - COURSE threads are better becasue they have a smaller minor diameter, and consequently the cross section of the softer material is larger, making the material stronger T/F Bolt holes are always clearance holes - Answer - TRUE when should you use a CNC - Answer - complex geometry, mass production typical toleran